==============================================
ActionGroup may integrate a drop down menu (internally a QMenu).
QMenu has signals aboutToShow and aboutToHide, which are called just before showing/hiding the menu.
This commit extends ActionGroup by providing corresponding signals.
An ActionGroup can be added to more than one toolbar and thus creates more than one menu. So, it can theoretically
happen that you have opened a menu and click on another menu. For this reason, the menu is passed as argument:
void aboutToHideMenu(QMenu*);
void aboutToShowMenu(QMenu*);
- it was frequently requested and people now even published videos since I documented this hidden feature in the Wiki.
However, for a user it is a nightmare without a UI and users who like a bright background need to change the button color to keep the buttons visible.
=====================================
Changes consquence of the review by OpenBrain:
- Use smart pointer for NotificationLabel (QT deleteLater compatible)
- Consistent use of measurement units in parameter naming.
- Consistent wording of code documentation.
- Improvements in branching of QTootTip based code.
- Remove redundant stop on singleshot qtimer.
- Improved filtering of click events.
======================================================================
In short, a "tooltip" alike notification, where the user can continue working without having
to interact with the notification. If the user is interested in the notification, he or she can
stop to read it. If not interested, the user can ignore it and continue working. The notification
will automatically disappear when the timer lapses or before that time, as described below.
A new widget similar to QToolTip, to have a similar look and feel
and interface, while avoiding early closing on user action.
QToolTip is not intended for notifications, but to provide contextual help. While
QToolTip could have been used for part of the functionality (by filtering out events),
other parts required additional changes to the interface
Gui::NotificationBox is a reimplementation intended to provide user notifications. It
relies on the proven code of QToolTip for the wanted behaviour.
Additional functionality:
- A notification box has a minimum time for which it won't close, unless popped out (click inside
the notification).
- After the minimum time, if left mouse button is clicked (anywhere) it auto-closes, as it is
understood the user has continued working.
- After a maximum time, it will automatically close (even in nothing is clicked).
- it turned out that the current check for default font failed because of wrong check for the hinting
- fix bug that when the FontSize is not yet stored in the parameters, the dialog shows a wrong size value
- there is a bug: when deleting any NaviCube parameter in the parameters dialog, the background color suddenly changes
the fix is to register the NaviCube parameters to the view
- the PR also fixes the issue that the default font size was not properly calculated but hardcoded
